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Years ago in a welding shop we would get worm tracks if the stickout wasn't long enough. The explanation was something about moisture in the flux and the longer stickout gave more time to preheat it. I am not so sure of the credibility of that explanation but it did work to go longer. You can easily go 1 inch or more on stickout with dual shield.

In my experience, wormtracking is most often caused by using too high a voltage for the set wire feed speed(amperage). As a previous poster said, it can also be caused by moisture in the wire. Correct stickout is a factor in this. But wire that's set out too long in a very humid environment can develop wormtracking issues. So can welding on wet steel.

What specific product are you welding? What wire feed speed are you using?

worm tracks

Originally Posted by A_DAB_will_do

What are you welding? Plate or Pipe? What position.

In my experience, wormtracking is most often caused by using too high a voltage for the set wire feed speed(amperage). As a previous poster said, it can also be caused by moisture in the wire. Correct stickout is a factor in this. But wire that's set out too long in a very humid environment can develop wormtracking issues. So can welding on wet steel.

What specific product are you welding? What wire feed speed are you using?

Worm tracks

I had issues a year ago in my shop when I started teaching. We went to straight co2. But bigger thing was not enough gas. 40-50 cfh is what weld parameters said. As suggested look up consumables data sheet will give u a start point for all settings including gas flow, voltage & wire feed